Lexicon PCM NATIVE - Room Algorithm; Room Algorithm Applications

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Room
The Room algorithm was introduced in the PCM96 and is one of the most ex-
ible algorithms we’ve ever invented. Reection patterns can be easily selected,
scaled and equalized all while simultaneously passing audio, and the room size
can be instantly changed or reversed. It is similar to other Lexicon
®
reverbs in
that it is used to create the illusion of space. However it differs in important ways.
A room is comprised of a selectable early impulse taken from actual room mea-
surements. There are several categories of responses, including small rooms,
large rooms and odd rooms (impulses from unconventional sources). There are
parameters to allow adjustments to this response, including scaling and reversing
the response. In many cases this is sufcient.
There are three primary applications for the Room algorithm:
Post Production • - Lexicon
®
reverbs are renowned for smooth tails and con-
trolled frequency response. However, in many cases the earlier components
are more important. This may be true for some forms of popular music and is
even more true for post-production. In these cases, specic types of spaces
need to be invoked for convincing dialog and effects.
Reverbs • – This algorithm can also be used to generate large reverberant
spaces that have a very different character from the more traditional Lexicon
reverbs. These reverbs provide a high-quality counterpoint to the original
“Lexicon Sound”. There are a number of presets which take advantage of
this.
Effects • – Because room patterns can be reversed, there are many additional
sounds available, such as backwards reverb and gated sounds.
The Room algorithm provides the inherent realism of the actual space with all the
precise control and manipulation that is only possible with a reverb synthesizer.
NOTE: Though the term
“impulse” is used in this
manual, these algorithms
are NOT convolution
reverbs!

!